Putting this together, the project "Videoteenage Fabienne alias Decibelle 2 mpg top" might be a music project or a digital media series. The "2 mpg top" could be a title or part of a series. Maybe it's a second part of a project, like a sequel or a specific track. Alternatively, "2 mpg" could be a typo for "2 mps top" (miles per second?), but that seems unlikely.